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The computer controlled liquid pumping system delivers precise volumes of reagents, standards and check solutions to the analysis system. Automatic calibration at user defined intervals ensures 24 hour accurate and reliable data.
Sample carry over and contamination are eliminated via automatic back flushing and cleaning of the analysis system and sample lines. This ensures optimum analytical performance for every measurement. Only Aqualab can achieve analytical performance directly from the field comparable to that produced in the laboratory.
Versatility of system configuration and the ability to analyse different ranges enables the system to meet the demands for reliable and accurate data from a wide variety of applications including:
- nutrient monitoring in wetland areas for environment control
- sewage treatment plant
- effluent discharge monitoring
- aquaculture
On the occurrence of critical events, the system can trigger an external sampler to capture samples for further in depth laboratory analysis. The outputs of up to 8 external (4-20mA) sensors such as depth, flow, rainfall and weather conditions can all be logged by the analyser in the one data set providing a complete environmental measurement system.
Up to 25 individual schedules employing a variety of parameters, standardisations, flushes etc., can be defined and set up to function differently. Periodic schedules can be set up to start at a particular time and be repeated at set time intervals. The timetable option allows a schedule to run at predetermined times throughout the day. A schedule can be configured to run only when an event, such as a chemistry parameter exceeding a defined level, is detected or when an external event occurs such as in increase in depth sensed by an external sensor connected to Aqualab.
This flexibility and versatility, allows the user to configure Aqualab to perform the required analyses in a timely fashion and when events occur which would normally be missed with a normal grab sample regime. The ability to discretely select the tests required and dictate the frequency of analyses provides cost effective monitoring.
Standalone remote operation, dispensing with need for field visits, greatly reduces costs associated with laboratory testing. User defined alarms can be set up to alert the user to:
- sample measurements outside predetermined levels
- low reagent and standard liquids
- limited memory in the data logger
- low battery charge
- water ingress
Alarms can be used to trigger an external event such as a flashing light or send a message via a modem and are always recorded in the data logger. Aqualab is designed to be a standalone remote analytical system operating 24 hours every day and not requiring regular user field visits. Extremely remote locations can be handled by use of solar panels as a power source.
The systems communicate the data and alarm status locally via RS 232, 4-20mA outputs or remotely via landline, GSM modem, satellite or radio links. Remote communication is achieved using SMARTCom software; a Windows based package designed to reside on remote or portable PC's. Greenspan's Aquagraph software package presents data in either tabular or graphic format. Designed to work in remote locations with minimal operator intervention, the systems allow diagnostic interrogation remotely by using a terminal emulator such HyperTerminal, featured in Windows accessories. This allows the user and Greenspan engineers to identify and rectify problems remotely.
The design of the chemistry modules and reagent systems ensures that the minimum of field visits are made for routine servicing and maintenance. Greenspan Technology's Aqualab and Mini-lab water quality analysers provide cost effective 24 hour reliable and accurate laboratory comparable data with minimal requirement for field visits. | 
